Mezclas y soluciones (Mixtures and Solutions)

Sesenta autores, desde catedráticos de universidad hasta estudiantes de Secundaria y Bachillerato, nos presentan los cuarenta desafíos que la Real Sociedad Matemática Española propuso con motivo de su centenario.Son cuarenta estimulantes retos que avivan el ingenio. Enfrentándose a ellos, el lector se sentirá un auténtico investigador matemático.Pero no hay que asustarse. No es necesario saber muchas matemáticas. La herramienta esencial para resolver los desafíos es pensar ordenadamente.

Pets! We love them, and we take good care of them. Learn all about what Fish need to be happy and healthy pets. ¡Las mascotas! Las amamos y las cuidamos mucho. Aprende todo sobre qué necesitan los Peces para estar felices y ser mascotas saludables.

This translated edition of My Holiday Memories Scrapbook for Kids, Translated Spanish Edition is printed in Spanish. It is the fifth scrapbook in the series and is especially designed for children to help them to remember their unique and joyful adventures through life. Scrapbooking provides an outlet of expression that may not be available in any other form. Families get involved and show their children how much they love them by helping them fill in the pages of this book to preserve family memories. When I was young, I had a baby book. My Holiday Memories Scrapbook for Kids, Translated...

Fun and lovable illustrations offer encouragement and celebrate dreams for girls who know deep down they have what it takes to achieve anything they want.